05_gmc_slt

Ok so I hooked up the D3 to the Metra VT-GMOS-04 harness so that I could retain control of my chimes and Onstar. However, Onstar does not work! When I press the blue button the D3 shuts down, but I don't hear the familiar "Onstar Ready". When I press the blue button again to cancel, the D3 turns right back on. Any thoughts as to why this is? I have done the D3 Mod (moving the mute wire up a slot to watch DVD while driving) does that have something to do with it? Thanks!

I had this same problem with my 05 Sierra! Disconnect the orange/white illumination wire that comes out of the D3 and either find the wire in the stock wire harness...or you can do like I did and run a jumper wire over to the headlight switch. Run it behind the cluster and find the wire in the switch that triggers when the lights are on/off. In order to know this, in the NAV Menu there is a choice for "Connections" I dont remember exactly how to get there but once you find it, it will show you the GPS antenna strenth, and down at the bottom it says Illumination on/off. Anyway, I figure

Anyone tried the Blackjack II for AT&T?

So am I understanding right that all the functions of the Iphone Ipod work except the video? So I can't watch all those episodes of Family Guy on my D3?